Title :
Error performance of optimum chip waveforms for DS-CDMA using wavelets
Author :
Ozturk, Ertan ; Atkin, G.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL, USA
Abstract :
We obtain optimum continuous time wavelet waveforms for chip pulse shaping waveforms of DS-CDMA signals. We first derive a performance measure for a DS-CDMA system, which is the normalized interference in terms of the chip waveform. Then, we design the optimum wavelet waveform to minimize the interference under a bandwidth constraint by utilizing the relationship between the wavelets and FIR filter banks. We evaluate the probability of error of the optimum wavelets, and they are compared with conventional chip waveforms such as the raised cosine and sinc
Keywords :
FIR filters; channel bank filters; code division multiple access; error statistics; multiuser channels; optimisation; pulse shaping; radiofrequency interference; spread spectrum communication; wavelet transforms; DS-CDMA signals; DS-CDMA system; FIR filter banks; bandwidth constraint; chip pulse shaping waveforms; error performance; error probability; normalized interference; optimum chip waveforms; optimum continuous time wavelet waveforms; optimum wavelet waveform design; raised cosine waveform; sinc waveform; Bandwidth; Bit rate; Continuous wavelet transforms; Finite impulse response filter; Interference constraints; Multiaccess communication; Multiple access interference; Pulse shaping methods; Semiconductor device measurement; Wave functions;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7244-1
DOI :
10.1109/PIMRC.2001.965452
